Abstract

We report a measurement of the [Formula Presented] mixing parameter [Formula Presented] based on a [Formula Presented] sample of [Formula Presented] resonance decays collected by the Belle detector at the KEKB asymmetric [Formula Presented] collider. We use events with a partially reconstructed [Formula Presented] candidate and where the flavor of the accompanying B meson is identified by the charge of the lepton from a [Formula Presented] decay. The proper-time difference between the two B mesons is determined from the distance between the two decay vertices. From a simultaneous fit to the proper-time distributions for the same-flavor [Formula Presented] and opposite-flavor [Formula Presented] event samples, we measure the mass difference between the two mass eigenstates of the neutral B meson to be [Formula Presented].

abstract = "We report a measurement of the [Formula Presented] mixing parameter [Formula Presented] based on a [Formula Presented] sample of [Formula Presented] resonance decays collected by the Belle detector at the KEKB asymmetric [Formula Presented] collider. We use events with a partially reconstructed [Formula Presented] candidate and where the flavor of the accompanying B meson is identified by the charge of the lepton from a [Formula Presented] decay. The proper-time difference between the two B mesons is determined from the distance between the two decay vertices. From a simultaneous fit to the proper-time distributions for the same-flavor [Formula Presented] and opposite-flavor [Formula Presented] event samples, we measure the mass difference between the two mass eigenstates of the neutral B meson to be [Formula Presented].",

author = "Y. Zheng and Browder, {T. E.} and K. Abe and K. Abe and R. Abe and I. Adachi and H. Aihara and M. Akatsu and Y. Asano and T. Aso and T. Aushev and Bakich, {A. M.} and Y. Ban and A. Bay and Behera, {P. K.} and A. Bondar and A. Bozek and M. Bra{\v c}ko and Casey, {B. C.K.} and Y. Chao and K. Chen and Cheon, {B. G.} and R. Chistov and Y. Choi and Choi, {Y. K.} and M. Danilov and S. Eidelman and V. Eiges and Y. Enari and C. Fukunaga and N. Gabyshev and A. Garmash and T. Gershon and B. Golob and C. Hagner and F. Handa and T. Hara and Hastings, {N. C.} and K. Hasuko and M. Hazumi and Heenan, {E. M.} and I. Higuchi and L. Hinz and T. Hokuue and Y. Hoshi and W. Hou and H. Huang and Y. Igarashi and T. Iijima and K. Inami and H. Ishino and H. Iwasaki and M. Iwasaki and Jang, {H. K.} and Kang, {J. H.} and Kang, {J. S.} and Kataoka, {S. U.} and N. Katayama and H. Kawai and Y. Kawakami and N. Kawamura and T. Kawasaki and H. Kichimi and Kim, {D. W.} and Kim, {H. J.} and Kim, {H. O.} and Hyunwoo Kim and Kim, {J. H.} and Kim, {S. K.} and K. Kinoshita and S. Kobayashi and S. Korpar and P. Krokovny and A. Kuzmin and Y. Kwon and G. Leder and Lee, {S. H.} and J. Li and D. Liventsev and R. Lu and J. MacNaughton and G. Majumder and S. Matsumoto and T. Matsumoto and W. Mitaroff and Y. Miyabayashi and H. Miyake and H. Miyata and T. Nagamine and Y. Nagasaka and T. Nakadaira and E. Nakano and M. Nakao and H. Nakazawa and Nam, {J. W.} and Z. Natkaniec and S. Nishida and O. Nitoh and T. Nozaki and S. Ogawa and T. Ohshima and T. Okabe and S. Okuno and Olsen, {S. L.} and Y. Onuki and W. Ostrowicz and H. Ozaki and Park, {C. W.} and H. Park and Park, {K. S.} and J. Perroud and Piilonen, {L. E.} and Ronga, {F. J.} and K. Rybicki and H. Sagawa and Y. Sakai and Sarangi, {T. R.} and M. Satapathy and A. Satpathy and O. Schneider and S. Schrenk and C. Schwanda and S. Semenov and R. Seuster and Sevior, {M. E.} and H. Shibuya and V. Sidorov and Singh, {J. B.} and N. Soni and S. Stani{\v c} and M. Stari{\v c} and A. Sugi and K. Sumisawa and T. Sumiyoshi and S. Suzuki and Suzuki, {S. Y.} and T. Takahashi and F. Takasaki and K. Tamai and N. Tamura and J. Tanaka and M. Tanaka and Taylor, {G. N.} and Y. Teramoto and S. Tokuda and T. Tomura and T. Tsuboyama and T. Tsukamoto and S. Uehara and K. Ueno and S. Uno and G. Varner and Varvell, {K. E.} and Wang, {C. C.} and Wang, {C. H.} and Wang, {J. G.} and Y. Watanabe and Eunil Won and Yabsley, {B. D.} and Y. Yamada and A. Yamaguchi and Y. Yamashita and M. Yamauchi and H. Yanai and M. Yokoyama and Y. Yuan and Zhang, {C. C.} and Zhang, {Z. P.} and V. Zhilich and D. {\v Z}ontar",

N2 - We report a measurement of the [Formula Presented] mixing parameter [Formula Presented] based on a [Formula Presented] sample of [Formula Presented] resonance decays collected by the Belle detector at the KEKB asymmetric [Formula Presented] collider. We use events with a partially reconstructed [Formula Presented] candidate and where the flavor of the accompanying B meson is identified by the charge of the lepton from a [Formula Presented] decay. The proper-time difference between the two B mesons is determined from the distance between the two decay vertices. From a simultaneous fit to the proper-time distributions for the same-flavor [Formula Presented] and opposite-flavor [Formula Presented] event samples, we measure the mass difference between the two mass eigenstates of the neutral B meson to be [Formula Presented].

AB - We report a measurement of the [Formula Presented] mixing parameter [Formula Presented] based on a [Formula Presented] sample of [Formula Presented] resonance decays collected by the Belle detector at the KEKB asymmetric [Formula Presented] collider. We use events with a partially reconstructed [Formula Presented] candidate and where the flavor of the accompanying B meson is identified by the charge of the lepton from a [Formula Presented] decay. The proper-time difference between the two B mesons is determined from the distance between the two decay vertices. From a simultaneous fit to the proper-time distributions for the same-flavor [Formula Presented] and opposite-flavor [Formula Presented] event samples, we measure the mass difference between the two mass eigenstates of the neutral B meson to be [Formula Presented].